Lubricant compressor



Filed Jan. 12, 1928 (Patented Feb. 24, 1931 v HA S- RE IDEL, or w Es AiinN, GERMANY" LI IBRIeAN'IVCOMPRESS QBQ i nriicalion fiEdJafi y 92 r In the lmownhigli pressurelubricant com ,press ors actuatedby hand the filling of the 'supply.container,'particularly with consist ent grease, isveryunsatisfactory, The filling o spaces more or less filled with air. The'oper- 1 ation of filling: is also tedious and the hands has" hitherto always been effected I by means of a trowel or by means ofa separatejfilling device. 1 The .re'sultofthislis that the filling carinever be of the required uniform density The mass'ofzgr'ea se with which the device is" filled is always liableto contain hollow and clothesarefrequently soiled whilst do-v ing this. The hollow spaces filledwith' air and distributed throughout the lubricantinf the supply container lead constantly to disturbances in operation of the, lubricant co n-' pressor. Accordingto the present invention the lubricant'is drawn directly into the sup ply container through the operating cylinder 1 by means of the follower piston due, tdt'he suction action. produced by the latter. For this purpose the nozzle together with the noni return-valvearemade suitablydetachable so that the operating cylinder or its extension can be used as,a free suction passage. The,

i compressor nozzle 'is therefore preferably V constructed in such a manner, different from the known constructions, that it forms a unit with the non-return valvewhich hitherto formed an accessory of the operating cylinder.- Itis loosely fitted, screwed ordetachably secured in any othernianner to the front portion of the lubricant compressor which forms the extension of the operating cylinder, and is preferably protected against loss and damage by a protecting cap which is screwed over'it. p

By reason of this construction of the lubricant compressor the filling ofthe sup-ply c011- taiiier can be effectedzrapidly, conveniently and uniformly whilst avoiding the-useof any auxiliary device." The lubricant can be with- I drawn completely and without the forma- 4t tainer by means of the follower piston.

tion of hollow spaces from any suitable con- An example of construction according to the invention is illustratedin the accompanying drawing, wherein:

Figure 1 shows a longitudinal section ofa $6,127, and i n eraat December 9, 1927. i i v complete high" pressure lubricant compressor with a detachable nozzletogether with the return valve andthe protecting cap screwed thereon.

' Figure-'2 isfan'elevation ofthe nozzle with f the rearward extension serving as: a fitting member and containing thenon-return valve ,1

Figure 3 a In these drawings a indicates thejsiipp'ly container with'follower piston band aremove able cover '0 'providedwith a' small f air inlet op'en-ingn For removing the follower piston, from the supply container this isprovided- I is-a sectional' elevatiom of the lubricant compressor itself ready or. filling and afterr'emoval ofthe nozzle-1 walla thin'cord d or chain w at, whe the 7' lubricant compressor is rea'dy 'for operation, f V I is placedinto the space between the follower piston andthe closin g coverv 0; "In the 'oppoi site end of the supply container :0 "there is screwed the closing member e whichservesas aguide an'dstopforthe operating cylinder f. I

The piston g iss ecured to a 'bar It or into a disc provided with-,openings for the passage 'f'fl I ofthelubricant; *The spring 11 fOrmsthe return spring foritheoperating cylinder fand Y in this case is provided in the front portion of the supply container a; "-It serves at the same time to pressthe bar, it, supporting the piston, against a shoulder of the supply container. The nozzle is provided with; a' rearward tubular shaft Z, slidably engaging; with the operating cylinder or the extension thereof, a l wh ch shaft simultaneously forms-the valve body for thenonreturn valve m. This tubula-r shaft Z of'the nozzle Z0, insteadof beingloosely fittedj in'to position may-also be screwed into the operating-cylinderor secured thereto, so as to' be readily detachable, in any other suitable manner. In order to fit the springm, which presses the non-return valve m against its seat, into the tubular shaft Z the shaft} is preferably-open at the front n c wed to the actual nozzle is. A ca a screwed upon the closing member e of the supply container: a prevents the nozzle is,v which by means of the tubular shaft Z is only loosely held in the operating cylinder i, from falling out iandbeing' lost when the lubricant compressor is not in use. At the same time it protects the nozzle and also all the parts of the supply container projecting beyond the closing .member 6 "from damage. -For the purpose of filling the supply container a the nozzle is, together withits tubular shaft Z and the non-return yalve m mounted in the latter,

are removed. from the operating cylinder 7, after removal of the protecting cap 0-, so that U a free passage is formed'in the operating cyl- The free end of :the operating cylininder.

. der is then inserted into the supply of lubricant and the follower'piston b is drawn back by means of the cord cl. Byreason of the vacuum thus formed'in the supply container a the lubricantflows through the operating cylinder f and pastthepressure piston ginto the, rear portion oii tliei. supply ,conta ner. The front portion of the latter, in which the return spring 2' is located, is not emptied as the I pressing up. of thetollower piston b is limited l by the-bar. h andstherefore does not require:

refilling. After the supply container a has been refilled the nozzle is with its tubular i7 shaft-Z is again-secured to the operating cyl inder and thelubrica ready .for operation.

p t compressor is again Having now part cularly described and.

ascertained the natureof my said invention,

and infwhatQmanner the sameis to be per-f formed, I declare that ,what I claim is 1'. In a high pressure lubricant compressor oi the class described, a barrel, a high pres;

sure cylinder. communicating therewith, av

piston; for said. high. pressure cylinder, a

dischargenozzle for establishing a lubricanttight connectionbetweensaid high pressure cylinder anda partto belubricated, a conduit member slidablyiengaging said' high pressure cylinder, said ..member carrying said nozzle and containing ajnon-return check. valve, said member being removable from.

high pressure cylinder, anozzle for establishing a. sealed connection, betweensaid high pressure cylinder and a part to be said high'pressure .cylinder'ior' filling said;

, compressor,therethrough, and a manually retractable piston in said barrel for sucking inbricant nae, said barrel through said high pressure. ,cylinder when the discharge 7 end thereof is placed in a container of lubricant,

2. A high; pressure lubricant compressor comprising, combination, a. barrel, a high pressure cylinder communicating therewith a d upp i d th re r m, a Pi ton er s id lubricated, a check]; valve assembly in terposed between said nozzle and said cylinder,- said nozzle and check'valve assembly slidably and-removably engaging said cylinder whereby said nozzleand assembly'may readily removed as a unit to fac'ilita'te filling said'compressor through the high pressure y. 1 der, Pi to inslei b e nd anual means or re ac i g sa d la fiifanled piston to suck lubricant into said barrel and thereby fill the same.

3. In a high pressure lubricant compressor I of the class described, a barrel, a high pressure cylinder projecting from one end of said barrel and reciprocable' relative thereto, a piston for said high pressure cylinder, a con duit memberdetachably carried by saidhigh pressure 'cylind'erand-removable for filling said compressor through said cylinder, a

se ing. nozzl and? ba Valve. Secured Within said. conduit member, and a manually alubricant and air-tight seal therein when moved in both c'lirecti'o'ns for sucking l ubri cantfthereinto through said. high pressure .retra'c-table piston in said barrel and making 1 cylinder when saidnozzlefand'coiiduit inertber are removedftheretro'm.

4. In aihigh pressure flfubricant"com ressor oi:' the class described,;' a t nets 'i'gh pressure cylinder n axial-[al gnment and communicat ng therewith, a piston for said.

-sh P es u e cy n e i h r enee' l for establishing a lubricant tight connection;

between said high pressure, cylinder ,anda

part to be lubricated, aiconduit member slidably engaging said high pressurecylinder, said member carry ng said nozzle and con taming a non-return check valve, said'mem-p her being removable from said high pressure cyl nder for filling said compressor therethrough, and a manually retractable piston in said barrel for sucking lubrlcant into" sa d barrel through said high pressure cylinderi when the discharge end thereof is placedin a container of lubricant. l I p e 5. A high pressure lubricant compressor comprising. in combination a" barrel; a high pressure cylinderv communicating" therewith and 'supplied therefrom, piston for. 1 said high pressure cylinder,;a nozzle for establishing a sealed connection between said high pressure'cylinder' and a part to be lubricated. a check valve assembly interposed between said nozzle and saidcylinder, said nozzle and said check valve assembly slidablyand.

removably engaging saidcylinder, whereby said nozzle and assembly may be removed as a unit to 'facilitate'filling said compressor throughsaid high pressure cylinder, a pis 

